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Wyszukujesz frazę "Ichthyofauna" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Zróżnicowanie zespołów ryb w małych rzekach położonych na terenach zalesionych i niezalesionych
Diversity of fish fauna in small rivers located in forested and non-forested areas
Autorzy:
Rechulicz, J.
Płaska, W.
Powiązania:
https://bibliotekanauki.pl/articles/989259.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tereny lesne
tereny niezalesione
zlewnie rzek
cieki wodne
rzeki
fauna
ryby
bogactwo gatunkowe
wskazniki roznorodnosci
zageszczenie zwierzat
ichthyofauna
species richness
streams
habitat
forest catchment basin
Opis:
The knowledge on the ichthyofauna community in forest complexes in our country is mainly limited to few information on fish species found in rivers and reservoirs located in the protected areas. Hence, the aim of present study was to evaluate the importance of forested and non−forested areas, which include small rivers, on the occurrence of fish communities. The main criteria of evaluation were species richness, biodiversity and density of fish from rivers located in forested and non−forested areas in Roztocze and Puszcza Solska (south−eastern of Poland). The 12 study sites in the two groups of small rivers located on forested and non−forested areas were chosen (tab. 1). The control fishing was performed by electrofishing using IUP−12 gear. The total of 779 individuals of fish and lamprey belonging to 22 species were caught during the study. In the sections of rivers located in non−forested areas we noted 18 species, while in the rivers in forested areas – 16 ones. The analysis of the abundance domination showed that the dominant species in the rivers sections on non−forested areas were perch, roach and gudgeon, while in rivers located in forested areas: gudgeon, dace and brown trout. Simultaneously, in abundance of fish fauna from rivers in forested area a significant share of eastern sculpin, burbot and European brook lamprey were noted. The fish communities from both habitats showed similar values of biological diversity indices, but slightly higher density was observed in the rivers located in non−forested areas. The fish species composition was highly dependent on the close surroundings of the watercourse and the type of riparian zone. For the habitats from river located in non−forested areas the common, associated with aquaculture and also invasive fish species were characteristic. However, in the rivers in wooded areas, the typical for small streams and the rheophilic fish species were more frequent. The results of present study showed, that the largest differences in the dominance in fish structure and indicators of fidelity to the habitat preferences between the groups of rivers were determined.
Źródło:
Sylwan; 2016, 160, 04; 344-352
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gospodarka leśna a występowanie zawiesin w wodach rzek i potoków i ich oddziaływanie na ichtiofaunę i ekosystemy rzeczne
Forest management practices and the occurrence of suspended solids in rivers and streams and their influence on ichthyofauna and river ecosystems
Autorzy:
Mikołajczyk, T.
Nawrocki, P.
Powiązania:
https://bibliotekanauki.pl/articles/1292053.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
gospodarka lesna
erozja gleb
oddzialywanie na srodowisko
rzeki
potoki
wody plynace
zanieczyszczenia wod
zawiesina mineralna
ladunek zanieczyszczen
oddzialywanie na zwierzeta
ryby
forest management
soil erosion
rivers
ichthyofauna
gospodarka leśna
erozja gleby
ichtiofauna
Opis:
This article is based on a literature review and attempts to highlight the harmful effects of forest soil erosion on aquatic ecosystems with particular emphasis on ichthyofauna. We focus on the phenomena of excessive soil erosion caused by forest management practices and forest roads, subsequent sediment runoff as well as silting of watercourses and their impact on fish. Among others, the direct influence of the suspended sediments on fish reproduction, egg incubation, respiratory processes, growth and immunity, as well as indirect effects on habitat and migration are discussed. The authors' intention is to draw attention to this important and underestimated aspect of forest management in Poland. The aim of this publication is to bring about changes in the management of commercial forests that will minimize the erosion of forest soils, formation of high levels of suspended solids in rivers and in turn limit their negative impact on aquatic ecosystems.
Źródło:
Leśne Prace Badawcze; 2019, 80, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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